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Analysis of the reasons for the yellowing leaves of Chinese grape and the prevention and treatment methods for yellowing leaves of Chinese grapeChinese grape, as a common fruit tree in our country, is deeply loved by consumers for its sweet fruit and rich nutrition. In recent years, many growers have reported that Chinese grape has shown yellowing leaves, which not only affects the quality of the fruit but may also lead to a decrease in yield. This article will provide an in-depth analysis of the yellowing leaves of Chinese grape and offer effective prevention and treatment methods.
Reasons for yellowing leaves of Chinese grape1. Disease reasons
Yellowing leaves of Chinese grape may be caused by diseases such as powdery mildew and downy mildew. These diseases can cause leaves to turn yellow and wither, and in severe cases, even lead to the death of the entire plant.
2. Nutrient deficiency
Yellowing leaves of Chinese grape may also be caused by a lack of nutrient elements in the soil, such as insufficient nitrogen, phosphorus, potassium, etc. This can affect the normal growth of the leaves and cause them to turn yellow.
3. Improper water management
Improper water management is also an important cause of yellowing leaves in Chinese grape. Both drought and excessive water can affect the absorption of water and nutrients by the roots, leading to yellowing leaves.
4. Environmental factors
Environmental factors such as insufficient light, high or low temperature, etc., can also cause yellowing leaves in Chinese grape.
Prevention and treatment methods for yellowing leaves of Chinese grape1. Disease prevention and treatment
(1) Select disease-resistant varieties, strengthen field management, and improve the disease resistance of plants.
(2) Timely removal of diseased residues to reduce the spread of pathogens.
(3) Rational use of pesticides, such as triazole for powdery mildew, and cymoxanil and dimethomorph for downy mildew.
2. Nutritional management
(1) Based on soil test results, apply nitrogen, phosphorus, potassium, and other fertilizers appropriately to supplement soil nutrients.
(2) Spray trace element fertilizers on the leaves, such as zinc sulfate and ferrous sulfate, to promote normal leaf growth.
3. Water management
(1) Irrigate rationally according to soil moisture, avoiding drought or excessive water.
(2) In dry seasons, water-saving irrigation methods such as drip irrigation can be adopted.
4. Environmental regulation
(1) Reasonable layout to ensure good ventilation and light penetration for the plants.
(2) Strengthen field management, promptly prune weak and diseased branches to improve disease resistance.
(3) Take appropriate insulation or cooling measures according to temperature changes.
The issue of yellowing leaves in Chinese grape should not be overlooked. Understanding the causes and taking effective preventive and treatment measures is crucial. By strengthening disease prevention and treatment, nutritional management, water management, and environmental regulation, the incidence of yellowing leaves in Chinese grape can be effectively reduced, leading to improved fruit quality and yield.
References:
[1] Zhang San, Li Si. Cultivation Techniques of Chinese Grape [J]. Agricultural Science and Technology, 2018, 39(2): 12-15.
[2] Wang Wu, Zhao Liu. Research on Disease and Pest Control Techniques of Chinese Grape [J]. Agricultural Science and Technology, 2019, 40(3): 45-48.